6 Years CBSE Boards Chapterwise Solutions - Biology eBook. Price: ₹ Math IQ Challenge Objective MHT-CET Biology. Free. Biology Today. Here are NEET Notes PDF which can be viewed / downloaded in PDF format for free. These are short notes / summary of all important topics. Also important. Books List - Download as PDF File .pdf), Text File .txt) or read online. gdhghgdh . Objective NCERT @ Fingertips – MTG (NCERT Based) Biology @ Fingertips by Rahul Chawla (Tips & Mnemonics). Physics 1. Objective Physics (For.
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Hints and Answers as Given in Exemplar books All Chapters Modifications of roots for special functions Storage of food: Sometime, the extra food prepared by leaves is stored in roots. Such roots are underground, fleshy and of various shapes. The stored food helps the plants in tiding over the dormancy. In Carrot, Radish and Beet, tap root stores food and become fleshy. In Carrot, the food storing root become conical. It is called conical tap root.
In Pothos, long branched or unbranched, brown adventitious roots develop from nodes and internodes of the stem. They are called climbing or clinging roots. They secrete a sticky material which helps them to stick to the support and helps them in climbing. Photosynthesis: Tinospora is a twinner and grows very rapidly. The leaves on the stem are few and small. They cannot fulfil the food requirement of plant.
Thin, smooth, green and thread like adventitious roots develop suspended from the stem. These roots are called assimilatory roots. They carry out photosynthesis.
Breathing: The specialized groups of plants which inhabit the saline, waterlogged soil of creeks near coastal regions are called mangroves. Rhizophora and Avicennia are such plants.
They produce negatively geotropic and positively phototropic aerial roots from their underground roots. Hope this will help you to enhance your exam preparation.
Section-I has 1 to 8 questions carrying one mark each. Section-II has 9 to 15 questions carrying two mark each. Section-III has 16 to 23 questions carrying five mark each. Section-IV has 24 to 27 questions carrying five mark each. Section-I Q1. How many chromosomes are in a gamete of an organism that has 46 chromosomes in its cells?
Gametes n have half the number of chromosomes found in the cells 2n. The mechanism to prevent the self pollen from fertilizing the ovules by inhibiting pollen germination or pollen tube growth on the pistil. What is that mechanism?
Self Incompatibility. What is Amniocentesis? What is pedigree analysis?
It is study of family history about inheritance of a particular trait. It is done for several generations. Give the name of enzymes used for DNA replication. On examining a patient, he had a mass of proliferating cells damaging the neighboring tissues also.
The doctor explained the disease to the patient. Name the disease and its property.
Traditional hybridization procedures used in plant and animal breeding very often leads to inclusion and multiplication of undesirable genes along with the desirable ones. What are the steps involved in genetic engineering to over come this limitation?
What are the advantages of Molecular diagnosis technique?
Section-II Q9. When do implantation occurs?
The blastocyst is a liquid-filled ball of cells. Occurs around 5 — 8 days after conception. Implantation in the endometrium occurs at this stage. What do you understand by term mutations?
They can be defined as sudden and spontaneous changes in the cell.